Log finder and lifter for submerged logs, &amp;c.



.No. 873,579 .PATENTED DEC. 10, 1907v a. M. MUNN. LOG FINDER AND LIFTERFOR SUBMERGED was, &0.

APPLICATION FILED APE-2,1906.

gig/M2 Q fw' M om stra'rss ATEhlT JAMES M. HUXN, OF EVASSTOX, ILLINOIS,ASSIGNOR OF OXFFIIALI" TO ALEXANDER A. NORTON, OF CHICAGO, ILLIXOIS.

i l v LQGFINDER AND LIFTER ron SUBMEVRGED Loos, &c.

ton, in the county of Cook and State of lllientire-machine inequilibrium, and in this,.

nois, have invented a new and useful Log [Finder and Litter forSubmerged Logs and other Bodies. v o \ly invention relates especially tolumbering and a particular purpose of my device is the finding andlifting of submerged logs;

it is well known that in lumber districts a large amount of lumber liessubmerged and often hidden at the bottom of lakes and rivers and thatthis lumber is yet sound and' would be available for use if the logscomprising it couldbe located and brought to the surface of the. waterunder which they are. concealed. To secure these results, botlroflocating these logs and bodies, and lifting them when found, I havedevised and invented the log tinder and lifter for submerged timberillustrated in the accompanying drawings, in which Figure 1 is anelevation of the device. Fig. 2 is a plan. Fig. 3 is a section on theline 33 of F 1. Fig. 4 is a modification.

Similar letters refer to similar parts throughout the several views.

in the drawings A represents the frame of my device and a the beam,preferably of wood for purposes hereafter described.

13 isa searching tooth preferably in the form of a hook with the pointadvanced in the line of progress.

C is a cable, one end of which is led to the boat, windlass or othersourceof power, (not shown) and the other endis made. fast to thefinding device, and on the application of power the finding device istrailed through the Wutfil.

D, D, are legs, one on-eithcr side of the searching tooth B, and d, d,are feet at the extremity of the legs, broadened to prevent the logsfrom sinking into the mud or soft surface of the bottom of the lake orother water. These'legs are designed to hold the. searching tooth at thedesired position with reference to the lake bottom and to hold the theholding of the machine in equilibrium,

the feet are further as stcd by making the stern a of the trams Apretcrably 0t, wood, which being lighter than the metal portions will,when submerged, act as a fish:

ing cork and keep the. hook and tooth in posi Specification of LettersPatent.

, Application filed- April 2, 1906. Serial-No 309.314.

with the tooth B and Clasps the log.

Patented Dec. 10,1907.

tion. If for any reason wood is not used inf the frame or becomes soddenand heavy, the same result may be secured by using an attached lloat ofany buoyant -n'1aterial.- My device is also provided with 'an upper 'jaw01'. second tooth" E, prefcrably sharpened as shown in the drawings andadapted to 00- operate with the searching tooth as hereinafter shown. 1

The tooth E is preferably hidden orheld out of the \i'ay when not in useto prevent entanglement during the process of searching for thesubmerged timberpbut thev cable C, after being run through the head' ofthe trame A over a pulley c therein as shown in Fig. 1 or, as shown inthe modification illustrated in l ig. 4, over the pulleys e and ctherein, is also attached to the base of the;

condary tooth E as shown in the drawings in a way to cause both teeth tooperate from the same cable, for the searching tooth voperatesby beingdrawn over the surtace ofthe lake bOlJtOIllftt the tension necessary forthat urpose'; but when it strikes the submerged 1 lbg, a greaterresistance occurs and a greatr' the main cable C beyond the normaltension,

draws the tooth E downward to 'cooper 'la'lte e tension is thencontinued and increased until the log is brought to the surface andreclaimed. The auxiliary tooth E may be held more sccu'rely'in positlonby a set screw or thumb screw which regulates the tension. Inpracticethe device operates as follows: The machine is placed in thewater of the lake or body of water to be searched for lurn her. It sinksby the gravity of its metal portionsuntil the feet of the machine reston the bottom. The wooden parts of the machine have a tendency to floatand cause the beam to standat an angle of approximately fortyiivcdcgreesbringing the searching tooth in proper position to engage thelog. The cable C is now drawn upon by boat, Windlass or other power andthe device, with the tooth B advanced before the feet, is dragged. onthe submerged surface. The tooth B being in advance of thefect willfirst engage with ob- ,iects' on the bottom of the water,.'and when '80tension ,is' placed on the cable until the second I strain now dislodgesthe second tooth E and it in turn strikes its sharp point into the logon the op osite side thus completing the grasp.0f t e finding machine onthe submerged timber. These teeth are intended to have a eant-hook-likeclamp upon the log and, working together, make it impossible for a loonce grasped to escape. from the elutcho the machine. When onceattached, the log may be brought to the surface by power exerted on thecable in any of the usuatways. A second cable F attached to the tooth orjaw E for the pur' ose of liberating the tooth. When it is (esired torelease the machine the cable C is slaokened and then tension on thecable F will open the jaws of the machine and release the object-grasped. The cable shown in the drawwithout the buoyant feature, butnot so well as with it; Other points than those described may beemployed on the teeth, if securing the same results. The tooth B ismovable laterallyv in the beam to allow of creme greater adjustabilityand is readily detachable to allow of being replaced when broken.

What I claim and desire to secure by Letters Patent of the United Statesis: A

1.. A log-finder for submerged logs comprising a lower tooth adapted toengage with objects in the line of its progress, and an up\ per toothautomatically cooperating with the'lower tooth, substantially asdescribed and shown. 40

2. A log-finder, comprisin a frame, a lower searching tooth attached tothe frame and located in advance of the legs and adapted to engage withobjects in the line of itsprogress, and two legs located, one on eitherside of the searching tooth, to maintain the machine in position,substantially as described and shown.

3. A log-finder, comprising a frame, a searching-tooth located to takeagainst and seize objects in its progress, an auxiliary tooth,automatically operated'to assist the searching tooth in its rasp ofan,object,' and means to maintain t e equilibrium of thedevice,substantially as described and shown. 55

JAMES M. MUNN. Witnesses: i

F. JACOBSON, D. A. HoLMEs.

